Hadoop General Interview Questions, Answers for Freshers and Experienced asked in various Company Job Interviews

Hadoop General Interview Questions

Questions Answers Views Company eMail

What happens if one hadoop client renames a file or a directory containing this file while another client is still writing into it?

351

Which directory does hadoop install to?

366

Why use hadoop?

315

What are the actions followed by hadoop?

333

What kind of hardware is best for hadoop?

303

Where are hadoop’s configuration files located and list them?

297

How jobtracker assign tasks to the tasktracker?

309

What are the functionalities of jobtracer?

300

What does rack awareness mean?

290

What the information segments utilized by hadoop are?

300

Clarify what a task tracker is in hadoop?

313

How ordering in hdfs is finished?

309

Clarify what is sequence file input format?

348

How job tracker schedules an assignment?

291

Clarify what jobtracker is in hadoop? What are the activities followed by hadoop?

327

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Un-Answered Questions { Hadoop General }

How will you write a custom partitioner for a Hadoop job?

327

Explain how can we check whether namenode is working or not?

391

What are the most common InputFormats in Hadoop?

400

Is Namenode machine same as DataNode machine as in terms of hardware?

332

Define data cleansing?

282

Mention what is data cleansing?

306

What does the mapred.job.tracker command do?

317

What is Mapper? How can we compress Mapper output in Hadoop?

323

What are the features of Standalone (local) mode?

394

What are the main components of hadoop?

295

What is replication factor?

319

What is the basic difference between traditional RDBMS and Hadoop?

324

Explain the common input formats in hadoop?

336

What is Disk Balancer in Hadoop?

303

Can you explain commodity hardware?

307

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